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论文类型：期刊论文

发表时间：2014-01-22

发表刊物：SEPARATION SCIENCE AND TECHNOLOGY

收录刊物：SCIE、EI

卷号：49

期号：2

页面范围：305-310

ISSN号：0149-6395

关键字：alloy refining; segregation coefficient; Si-Al-Sn alloy; solar-grade silicon

摘要：Numerous studies have searched for methods of Si refining for the production of photovoltaic cells to alleviate the global shortage of solar-grade Si. An alloy refining progress with a Si-Al-Sn melt was developed in this paper. To elucidate the relationship between Sn and B, the interaction parameter between them at 1173K was determined as 2506 +/- 143. This result indicated the strongly repulsive force between Sn and B. Thermodynamic analysis and experiments showed that the purification efficiency of Si-Al-Sn alloy weakened with increased Sn content in the melt.